Writing-plotting apparatus with keyboard

A recording appartus capable of writing characters such as letters and symbols in a writing mode, and plotting graphs in a plotting mode, comprising:

• a keyboard having character keys corresponding to said characters, and function keys;
• a paper support member for supporting a sheet of paper;
• a paper feeding device for feeding said sheet of paper in one of opposite directions;
• a carriage supporting a writing instrument, and movable in a direction perpendicular to a line of feed of said sheet of paper;
• a carriage driving device for reciprocating said carriage in said direction;
• a character pattern memory for storing sets of character pattern data representative of patterns of said characters;
• a graphic pattern memory for storing at least one set of graphic pattern data representative of a graphic pattern;
• control means which, in said writing mode, reads out from said character pattern memory the sets of character pattern data corresponding to the character keys operated, and in said plotting mode, reads out from said graphic pattern memory said graphic pattern data, said control means being responsive to the read-out character and graphic pattern data and controlling the operations of said paper feeding device and said carriage driving device;
• and
• a display which displays, in said writing mode, the characters keyed in through said character keys, and which provides, in said plotting mode, messages relating to a procedure according to which data necessary to plot a graph is entered through said keyboard.